In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it (kilobits/s, megabits/s etc.).

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Inspecting http traffic

I'm running a CentOS 5 with plesk 10 and problems with slow website loading, now my provider tells me i'm excedding my bandwith. I've been monitoring the bandwith with iftop and it showed me some ...
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2answers
142 views

IMAP , Minimum, Infrastructure/Network/Server required [duplicate]

Possible Duplicate: Can you help me with my capacity planning? As the title sugest i would like your feedback about IMAP accounts, any sugestion experience you have with it would be ...
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4answers
3k views

finding the best network latency between two countries

I know there are many tools to test for bandwidth and latency, but they all rely on having at least one host from which you can run those tests. I wonder whether there's an online source or some ...
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2answers
422 views

How to measure bandwidth within the last 15 minutes?

I would like to log my bandwidth into a database and find out when my windows server 2003 is being used the most. I want to feed the database with the bandwidth passed from the last feed (let's say ...
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1answer
509 views

Bandwith usage from pcap files

I've got a huge pcap file (many GBs) that I just can't load in wireshark. What I need is extracting bandwidth usage information, both total and per-protocol (in both incoming and outgoing direction), ...
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1answer
2k views

Command line speed test

There are several sites that give you decent speedtest metrics (DSLReports, Speakeasy; PhonePower even has additional VoIP-related metrics). I want to get these metrics on a periodic basis. Ideally, I ...
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2answers
1k views

How to find process which uses most bandwidth

How can I find the process which uses most bandwidth on a Linux PC? With iftop it's possible to find which connections produce most bandwidth, but how to find the process?
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1answer
395 views

Monitor network traffic over CentOS router

I have a CentOS 5.7 box configured as a router. Two network cards are attached to this machine, one connected to the Internet and one connected to an unmanaged network switch. The question is, how ...
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4answers
66 views

Loading after a minute

Here is the web site. http://reachourfans.com when i enter the site, it's loading nothing, and after a minute it's beginning loading the site. I've switched off the Update module, and installed it ...
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4answers
671 views

What tools should I use to assess bandwidth for web server farm..?

I'm contemplating moving datacentre and I need to know the size of pipe I'll need in order to get a quote. Currently I'm charged on GBs of traffic per month (currently about 42GB inbound - so ...
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1answer
196 views

Upload throttling in IIS 7

I've got a situation where multiple concurrent file uploads are being executed in a web application. These uploads are of massive files, among several users, and it's choking the system into terrible ...
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3answers
280 views

Server requirement for running an application having huge network traffic

What I am asking is a very common question that comes to any developer's mind when he/she wants to host a server but a precise answer is not easily available. I need to host a server which returns ...
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2answers
1k views

Configure a Linux router for fair bandwidth allocation without unnecessary limiting it

I run a Linux router (more precisely OpenWRT) on an internet connection with very limited bandwidth, around 1 MBit/s downstream and some dozen kBit/s upstream. There are several machines on the net ...
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228 views

When is directadmin user detail (especially bandwidth) updated? Possible to be online?

I hope it be the right place for asking about Directadmin, cpanel and other moderation web application. (I've deleted my question from pro webmaster site at http://webmasters.stackexchange.com and ...
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1answer
2k views

iperf-like bidirectional bandwidth measurement through NAT

I am using iperf to measure my uplink speed between my home PC behind NAT and a fully accessible root server. It does so using a TCP connection. For whatever reason it seems that iperf can only ...
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0answers
221 views

Bandwidth Consumption on VPN + SSL

I need to estimate how much bandwidth (in Kilobytes) I will consume doing a https request (with client ssl authentication) between two servers connected through VPN over Internet. There's no need to ...
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0answers
103 views

Getting bandwidth spent by user or by rails application on Ubuntu

I'm running multiple rails applications on AWS instance and I need to know how many bandwidth is each application using/wasting. Some of the applications are running with passenger over Apache2 some ...
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2answers
2k views

bandwidth monitoring issue on PfSense router

I have a PfSense router installed , where it has 4 interfaces. one of them is WAN and rest 3 are LAN networks, which have different subnets and IP address ranges. wan interface name = em0 lan ...
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1answer
191 views

What is the reason for variation in colocation pricing? [closed]

I have been doing a lot of research on colocation lately and have gained a lot of understanding in regards to how it all works and the different prices for various parts of colocation. Overall a lot ...
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3answers
4k views

Any freebsd/PfSense realtime bandwidth monitoring tool?

i need to know if there is any Tool (specifically for FreeBSD) , through which i can get the Realtime network traffic usage of any Host/IP , and which should also run on Multiple interfaces as well? i ...
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0answers
107 views

How to monitor bandwidth on host which uses bridge-util and virtualization

I am running a debian squeeze box with bridge-util and LXC containers. I guess this is a 2 part request. I would like to know what my total bandwidth usage is I would like to see it broken down by ...
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3answers
737 views

How much bandwidth speed do I need? [closed]

I have a 100 megabyte (MB) file, and I have a 30 megabit/s (Mb) dedicated bandwidth speed on my server. How many people could download this file at the same time, with acceptable speeds? What ...
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1answer
128 views

Difference between peer network levels?

What are the differences between the network peer levels? I've seen peer1 2 and 3 tossed around the web and wondered what the differences were. Thanks!
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1answer
364 views

droping packet on iptables = wasting bandwidth?

recently I do this on my iptables : -A INPUT -p tcp --dst 192.168.0.0/16 -m hashlimit --hashlimit-above 32/sec --hashlimit-mode dstip --hashlimit-name hosts -j DROP it seems that if my client ...
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945 views

monitor iis vhosts bandwidth usage with cacti

I am trying to monitor how much bandwidth is being used by websites(vhosts) on my iis (7.5) machine. on a per site basis. Is their a cacti plugin or configuration guide that i can use to monitor this. ...
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4answers
461 views

Monitor bandwidth usage of a datacenter

I would like to know what application is best for measuring bandwidth usage in large datacenters. Our company is in the process of setting up a DC which will have around 1000 physical servers. We ...
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45 views

File transfer - Bandwidth dropping down, following a pattern

This is what I get from the destination server while transferring a huge file to it over the LAN. The screenshot has been taken during the file transfer, I did not paused anything, the transfer was ...
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2answers
112 views

File transfer - Bandwidth flickering for no reason

We are experiencing file transfer issues. I try to troubleshoot this problem but it is really hard. Here is a screenshot I took while transferring a file from my workstation to another server. The ...
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1answer
134 views

Guaranteed international bandwidth solution?

How plausible is it to transfer large amounts of data consistently via the network? For example, is there a way to guarantee a minimum upload speed of 8Mb/sec from various international sites (Hong ...
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1answer
625 views

Tools to monitor bandwith (outgoing) on my ArchARM NAS/Server?

I have been having some problems with my router last few days, and in the process of narrowing down the problem, I found that while I wasn't using my home network explicitly I was having upto 1GB of ...
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2answers
110 views

Insufficient channel capacity of 1GBit

There is a Caching Server (Varnish): it receives data from Amazon S3 on request, saves it for some time and gives it to the client. We have encountered the problem of insufficient channel capacity of ...
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2answers
182 views

Broadband monitoring tools

We have DSL internet (6 mbps download/600 kbps upload) in our office. We have around 30 users with internet access. I would like to know what is the best way to monitor the bandwidth utilization. I ...
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3answers
429 views

What can I do to lower bandwidth cost on a bandwidth heavy site?

The easiest answer is CDN but I'd like to ask. A friend of mine has a server that is used for mirror downloads. He says he is doing about 10TB of bandwidth a month which shocked me (I wonder if he is ...
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3answers
500 views

Webserver at home: will my DSL line be good enough? [closed]

The evolution of DSL lines and technologies such as FTTH has make me wonder if traditional hosting services could be in danger. If you want to host your own domain, for example for a blog or a ...
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1answer
83 views

When to expand a web server's unshared connection?

We have a 3 mbps by 3 mbps dedicated, unshared pipe that hosts a web server, mail server, and VoIP/web browsing traffic for 8 employees. The web server hosts a few different sites that average about ...
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3answers
354 views

Calculating bandwidth math

I think I'm having a pretty fundamental problem in calculating bandwidth math. I work in streaming video and I often have clients asking me the famous question: "How many streams can I push at ...
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4answers
205 views

Need to get server bandwidth usage up to the moment (in bytes)

I am writing a CRON/PHP script that will check the server stats every 5 minutes (CPU/RAM/SSD) and log the info to the database. This way I will be able to see server usage over different periods of ...
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1answer
257 views

Plesk bandwidth monitoring with (Apache/Nginx) reverse-proxy setup

I want to build a reverse-proxy setup for static files using Apache and Nginx. I want to use it for Plesk. Normally, Plesk gets the bandwidth information from the Apache logs. Is it possible to ...
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0answers
290 views

Apache - Very high load/bandwidth and unusual pattern of requests

I am a web developer and have this server that's being used as a development machine of sorts. So, my experience with Apache is that I can fiddle around and get basic stuff done / google stuff to get ...
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1answer
7k views

AWS, Bandwidth and content delivery

My question is about Virtual Machines and delivering their content over the servers connection to the internet. I have an Ec2 windows instance, and that instances network connection appears to be ...
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4answers
290 views

Router for a heavy video streaming dependent network

I have a 50 Mbps WAN link and I use Asus RT-N16 with tomato firmware for NAT. My users view multiple streaming videos. At any given time there would be about 20 streaming videos which are being ...
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1answer
566 views

iftop bandwidth monitor shows rates=0 (but do show connected hosts) on tun0 (ppp)

On my FreeBSD box, working as my LAN's router, I tried using iftop (from ports/net-mgmt) to monitor bandwidth usage. The program works well for monitoring the server's LAN interface-card, but not for ...
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1answer
992 views

IPerf - Reverse test

I'm trying to perform a test using IPerf but in a special case. Usually iperf client send data to iperf server, what I need in this case is the server send data back to the client in the same ...
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2answers
105 views

What's the danger in having a website with many user accounts hosted by FatCow, GoDaddy, etc

I asked this on StackOverflow, but I think it's more appropriate here (plus I got no answer there). I host my websites with FatCow, and generally this isn't a problem since they're small-business ...
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0answers
287 views

Speed drop after first few seconds

On a job site I maintain (IT admin) I notice that downloads start at a pretty high rate (cca 700MBps) and then drop significantly to rates as low as 40Kbps... Not sure where to look first to determine ...
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1answer
328 views

multiple parallel uploads to a ftp server

I had a question w.r.t multiple parallel uploads to an ftp server. Lets say the bandwidth between the client and the server is B. When I open a connection with the server, will the entire bandwidth ...
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2answers
880 views

How do ISPs calculate bandwidth? [closed]

I mean, is 100 GB per month 100 * 1000^3 bytes or 100 * 1024^3 bytes? Wondering if they use the decimal definition like HDD manufacturers or the binary definition. I do know that there's technically ...
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2answers
168 views

Network monitoring per user

We dont have to many restrictions on the net in our domain right now. Normally its fine (we use fiber. 20 down and 35 up) with 40 users this isnt normally a big deal. Every now and again the ...
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2answers
68 views

Drop in passthru network monitor

I am looking for something that will allow me to take a computer with 2 NICs, and drop it in between a link of 2 things (router, server, computer, etc) and monitor all the network traffic, bandwidth, ...
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1answer
85 views

network bandwidth discrepancy

I have a cluster of machines with two 10Gbps intel network cards on each machine. 64 port Router, with each port of capacity 10Gbps is being used. when i try to measure maximum network performance ...